一种辐射量线性可调红外源设计

摘要

针对红外辐射源辐射控制问题,设计了一种均匀可调红外辐射源方案.分析了抛物柱面镜的光学特性,给出了抛物柱面镜反射后的辐射模型,并仿真模拟了抛物柱面镜的准直效果,证明了抛物柱面镜具有很好的会聚作用;对比了百叶窗和双向推拉窗的辐射调节效果,推导了双向推拉窗透光面积的变化模型,得到了推拉窗开口宽度与辐射功率之间的线性关系;基于以上研究,设计了均匀可调红外辐射源原理样机,并进行了验证实验,结果证明通过控制推拉窗开口宽度,能够较好的实现对辐射量的均匀控制.%In order to solve the control issue of infrared radiator, an infrared radiator with linearly controllable power is designed. The parabolic mirror is analyzed: the model of reflected power has been established, the collimation has been simulated, and the focusing effect has been proved. By comparing the jalousie and the two-direction tracking shutters, the change model of pervious area to light of the two-direction tracking shutters has been established. It turns out that the width of pervious area to light is linearly correlated with radiated power. Based on analyses, the prototype of infrared radiator with controllable power has been realized and tested. The results demonstrate that the radiated power could be linearly controlled by width of pervious area to light of two-direction tracking shutters.